Definition of doom. 1  1 : a law or ordinance especially in Anglo-Saxon England. 2  2a : judgment, decision; especially : a judicial condemnation or sentenceb (1) : judgment 5a (2) : judgment day 1. 3  3a : destiny; especially : unhappy destinyb : death, ruin.
In its native range Exacum affine is an annual or short-lived perennial and is suitable for permanent outdoor cultivation only in humid tropical and subtropical areas. Grown as a pot plant, this plant requires a well-drained, but moist potting mix. Exacum will tolerate good light but not direct sun.
HG 20 Introduction to Herbaceous Perennials. Perennials are plants that live year after year. This means the tops of the plants die back to the ground each fall with the first freeze. Every spring, new plant tops arise from the crown or roots, which persisted through the winter. Perennials are said to be hardy because they live through the winter.